Visualization of Chemical Composition and Chloride Ion Distribution by Novel NIR Imaging Spectroscopic System

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<p>This account summarizes our recent attempts to the visualization of the compositional distribution of chemical substances in a small mixer as well as the chlorine ion distribution on the concrete surface by novel Fourier-transformed Near-infrared (NIR) imaging spectroscopic system. The system realized the rapid and direct analysis of the compositional distribution of organic components in a mixer. The quantitative analysis of the three-component mixtures of chemicals was achieved by the measurements within several seconds, while the interpolation of the spectra by zero-filling greatly shorten the acquisition time without significant degradation of data quality. The system was also applicable for the detection of a NIR peak of Friedel's salt immobilized on a concrete surface. Because of its high sensitivity, compact size and the robustness towards the mechanical vibrations the detection of salt-damaged areas at the surface of the hollow bridge's girders was achieved by the outdoor measurements.</p>

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  • 日本画像学会誌

    日本画像学会誌 58 (6), 644-650, 2019-12-10

    一般社団法人 日本画像学会

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